Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Central Automotive Service & Repair, Inc.
Your car or truck's AC system is under extreme pressure and the thermal expansion valve or orifice tube monitors the amount of pressure and the temperature of your A/C system. It calculates the precise amount of refrigerant that can safely go into the evaporator. A failing expansion valve or orifice tube often causes a vehicle's air conditioner to blow hot air.
Replace or Repair
- Expansion Valves: Too much refrigerant causes your evaporator to get too cold whereas too little refrigerant would result in inadequate cooling. The expansion valve is a complex valve that regulates refrigerant flow. This process of metering the refrigerant adjusts the flow according to the temperature of the refrigerant in the evaporator coil. Talk to one of the pro mechanics at Central Automotive Service & Repair, Inc., as this part can be replaced on its own and does not require the entire replacement of the AC assembly.
- Orifice Tubes: Unlike the expansion valve, the orifice tube is a simple fixed device with no moving parts. It therefore cannot vary the flow of refrigerant into the evaporator, but rather causes a permanent restriction in the system. However, like the expansion valve the orifice tube regulates refrigerant flow through the system and filters debris which may come through in its screen. Often fixing a "bad orifice tube" requires replacing the entire evaporator assembly.
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Good customer service. Great work.
Michelle Eiermann, 06/03/2022
I'll be going here first next time. I went next door and they were rude and unprofessional so I came here to make sure they didn't screw up my car too. The employees at Central were lovely and took a quick look at my car without charging me. They've gained a new customer for sure.
Mike Freeman was so helpful and informative about my car's needs and I will always be taking my car to Central Auto from now on!
Silver Tab, 12/23/2021